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I just finished my very first robot today. Not having a Ping ultrasonic sensor I searched my parts box for ideas on how to avoid objects. After having realized that I couldnt avoid objects I figured the bot could run into an object, it just needed a way to eventually get around it. I reused some mouse buttons, an Adafruit motor shield and an Arduino Uno. I also used a Precision mandrel bent self suspensioning paper clip/ mouse wheel combo lol ;P I call it Stinkbot because I used the base of a Febreeze ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/my-very-first-robot-aka-stinkbot